User Manual

Remote Commands
R&S
®
FPL1000
889User Manual 1178.3370.02 ─ 09
[SENSe:]DEMod:SQUelch[:STATe] <State>
This command turns selective demodulation at the marker position on and off.
For selective demodulation, the R&S FPL1000 turns on a video trigger whose level
correponds to the squelch level. Therefore it turns other triggers or gates off.
Parameters:
<State> ON | OFF | 0 | 1
OFF | 0
Switches the function off
ON | 1
Switches the function on
Example:
DEM:SQU ON
Signals below the level threshold are not sent to the audio out-
put.
11.8.8.15 Programming Examples for Using Markers and Marker Functions
Various programming examples on how to use markers and the special marker func-
tions are provided here.
The use of spectrogram markers is demonstrated in Chapter 11.8.7.7, "Programming
Example: Configuring a Spectrogram", on page 837.
● Example: Basic Markers....................................................................................... 889
● Example: Marker Search in Spectrograms........................................................... 891
● Basic Frequency Sweep Measurement for Marker Function Examples............... 892
● Example: Using a Fixed Reference Marker.......................................................... 892
● Example: Obtaining a Marker Peak List................................................................892
● Example: Measuring Noise Density...................................................................... 893
● Example: Measuring Phase Noise........................................................................893
● Example: Measuring the Power in a Channel Using Band Power Markers.......... 894
● Example: Measuring Characteristic Bandwidths (Using the n dB Down Marker)
.............................................................................................................................. 895
● Examples: Demodulating Marker Values and Providing Audio Output................. 896
● Example: Performing a Highly Accurate Frequency Measurement Using the Signal
Count Marker........................................................................................................ 897
Example: Basic Markers
This example demonstrates how to configure and define markers for a basic spectrum
measurement in a remote environment. It assumes that the basic frequency sweep
described in Chapter 11.6.17, "Programming Example: Performing a Basic Frequency
Sweep", on page 747 has been performed and thus does not begin by presetting the
instrument.
//--------------Configuring marker behavior ------------------
DISP:MTAB ON
Setting Basic Spectrum RF Measurement Parameters